This dual construction model features an acetate eye front with stainless steel temples for optimum comfort and durability. Free Flex hinge componentry allows the temples to flex open easily without the use of a screw. The matt exterior and polished interior of this frame provides a premium aesthetic. C1 is a classic black with matt gun sides and smoky striated grey interior on the eye front. C2 is a tonal, striated brown and matt black combination.